The BuildBot is a system to automate the compile/test
cycle required by most software projects to validate
code changes. It builds and tests the tree each time a
change is committed, providing status updates through
a Web page or other protocols.

Bugzero is a Web-based change management and issue tracking system used in a distributed team environment to track software bugs, hardware defects, test cases, or any other issues. It can also be used equally well as a helpdesk customer support, trouble ticketing, or email management system to collect and manage customer feedbacks, incidents, requests, and issues. It is easy to use, but still flexible and adaptive, and can be configured to fit to your organization's unique business process and workflow.

P6Spy is an open source framework for applications to intercept and log database statements. The P6Spy distribution includes P6Log, which intercepts and logs the database statements of any application that uses JDBC. This application is particularly useful for developers to monitor the SQL statements produced by EJB servers, enabling the developer to write code that achieves maximum efficiency on the server. P6Spy is designed to be installed in minutes and requires no code changes.

Linux Test Project is a joint project started by SGI, OSDL, and Bull developed and maintained by IBM, Cisco, Fujitsu, SUSE, Red Hat, Oracle, and others. The project goal is to deliver tests that validate the reliability, robustness, and stability of Linux. Currently it contains more than 1000 syscall test cases, I/O and AIO stress test cases, a few Linux kernel device drivers, a well maintained fork of the Open POSIX Testsuite, a real-time test suite, and more.

The Grinder is a simple, pure Java load-testing
framework. Test client code is written in the
form of Java plug-ins. Sample plug-ins for testing
HTTP services are provided. It is particularly
suitable for testing BEA WebLogic Server-based
applications.

Lloyd's Java Shell is a java scripting tool (it could
read and execute java-like statement from any
input stream) that could easily be plugged into an
application and modify its object - so it is also a
configuration tool. It is also a good test tool, as
you could easily use it to test any feature of your
new object.